During cycle moni­to­ring, we track the cour­se of the enti­re cycle through ultra­sound checks and the deter­mi­na­ti­on of rele­vant hor­mo­ne levels such as est­ra­di­ol, LH, and pro­ges­te­ro­ne. This allows us to assess fol­lic­le matu­ra­ti­on, the buil­dup of the ute­ri­ne lining, and ovu­la­ti­on, and to iden­ti­fy pos­si­ble abnor­ma­li­ties in the inter­ac­tion bet­ween hor­mo­nes, ova­ries, and the endo­me­tri­um.